Little-known Dmitry Andreikin, 23, takes on the eminent Vlad Kramnik, 15 years his senior, in a generation battle at the final of the £1.1m World Cup in Tromso Saturday. Andreikin is leading a fresh advance by players born in 1990, already the prime vintage year of chess history.

Magnus Carlsen is world No1, Sergey Karjakin is a title contender while David Howell is British champion and the UK's youngest GM. In Tromso Andreikin and France's Max Vachier-Lagrave surged into the 1990 elite by reaching the semi-finals.

This group, along with Russia's Ian Nepomniachtchi, have competed against each other since they were talents in the world and European Under-12s, demonstrating the advantage conferred by being very good very young. At 22-23 they are still at least five years from a GM's peak age.

Technically the World Cup play has been uneven, with many unforced errors. Vachier-Lagrave blundered his queen horribly against Kramnik. The format, two-game mini-matches then speed tie-breaks, sparked some GMs to use the 'Grischuk Gambit', which was pioneered by the Russian at the 2012 candidates where he halved his classical games quickly so as to reach his blitz speciality.

Andreikin, one of the best internet blitzers at three-minute chess, also brought his own opening surprise. The Torre Attack with d4, Bg5, Nd2, Ngf3, e3 and Bd3 is reckoned harmless but it was certainly deadly for Andreikin at Tromso.

The four-game Kramnik v Andreikin World Cup final match is free and live online this weekend at worldcup2013.liveschach.net where a single page has the game, Houdini analysis and Nigel Short comments.

Below, Andreikin used his Torre to menace Karjakin's king but Black could have kept it level by 18...Bb5 19 Rf2 Nd6 or later by 24...Bc6 25 f6 Qb6+ 26 Kg2 Nxf6! with counterplay. Over the board Black failed to contain the attack and White's queen and rook crunched through on the g and h files.